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galben [10]
3 years ago
7

Can you plz help? Plzzzzz

Mathematics
1 answer:
katen-ka-za [31]3 years ago
3 0
First question:b 
Second question:c

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3.-7 + 12 +15 =
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Find the area and perimeter of a polygon with vertices located at A(-4,-8), B(4, -8), C(4, 0), D(0, 3), and E(-4,0).
AleksandrR [38]

Answer:

76 and 34

Step-by-step explanation:

See attached

As we see this is a polygon with  sides of AB=BC=AE and CD=DE

  • Sides AB=BC=AE equal to 8
  • Sides CD=DE = \sqrt{3^2 + 4^2} = 5

Area is the sum of areas of a square ABCE with side 8 and a triangle CDE with base of 8 and height of 3:

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  • Perimeter = 8*3 + 5*2 = 24 + 10 = 34

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